干旱区生态环境知识资源中心(Arid): Variation in intraspecific demography drives localised concordance but species-wide discordance in response to past climatic change

Arid

DOI	10.1186/s12862-022-01990-2
	Variation in intraspecific demography drives localised concordance but species-wide discordance in response to past climatic change
	Buckley, Sean James; Brauer, Chris J.; Unmack, Peter J.; Hammer, Michael P.; Beheregaray, Luciano B.
通讯作者	Beheregaray, LB
来源期刊	BMC ECOLOGY AND EVOLUTION
EISSN	2730-7182
出版年	2022
卷号	22 期号:1
英文摘要	Background Understanding how species biology may facilitate resilience to climate change remains a critical factor in detecting and protecting species at risk of extinction. Many studies have focused on the role of particular ecological traits in driving species responses, but less so on demographic history and levels of standing genetic variation. Additionally, spatial variation in the interaction of demographic and adaptive factors may further complicate prediction of species responses to environmental change. We used environmental and genomic datasets to reconstruct the phylogeographic histories of two ecologically similar and largely co-distributed freshwater fishes, the southern (Nannoperca australis) and Yarra (N. obscura) pygmy perches, to assess the degree of concordance in their responses to Plio-Pleistocene climatic changes. We described contemporary genetic diversity, phylogenetic histories, demographic histories, and historical species distributions across both species, and statistically evaluated the degree of concordance in co-occurring populations. Results Marked differences in contemporary genetic diversity, historical distribution changes and historical migration were observed across the species, with a distinct lack of genetic diversity and historical range expansion suggested for N. obscura. Although several co-occurring populations within a shared climatic refugium demonstrated concordant demographic histories, idiosyncratic population size changes were found at the range edges of the more spatially restricted species. Discordant responses between species were associated with low standing genetic variation in peripheral populations. This might have hindered adaptive potential, as documented in recent demographic declines and population extinctions for the two species. Conclusion Our results highlight both the role of spatial scale in the degree of concordance in species responses to climate change, and the importance of standing genetic variation in facilitating range shifts. Even when ecological traits are similar between species, long-term genetic diversity and historical population demography may lead to discordant responses to ongoing and future climate change.
英文关键词	Coalescent analysis Biogeography Comparative phylogeography Temperate Australia Percichthyidae
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000772132400001
WOS关键词	AUSTRALIAN ARID ZONE ; MURRAY-DARLING BASIN ; LIFE-HISTORY ; ADAPTIVE EVOLUTION ; GENETIC-VARIATION ; PYGMY PERCH ; ADAPTATION ; LIMITS ; SIZE ; PHYLOGEOGRAPHY
WOS类目	Ecology ; Evolutionary Biology ; Genetics & Heredity
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology ; Genetics & Heredity
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/391997
推荐引用方式 GB/T 7714	Buckley, Sean James,Brauer, Chris J.,Unmack, Peter J.,et al. Variation in intraspecific demography drives localised concordance but species-wide discordance in response to past climatic change[J],2022,22(1).
APA	Buckley, Sean James,Brauer, Chris J.,Unmack, Peter J.,Hammer, Michael P.,&Beheregaray, Luciano B..(2022).Variation in intraspecific demography drives localised concordance but species-wide discordance in response to past climatic change.BMC ECOLOGY AND EVOLUTION,22(1).
MLA	Buckley, Sean James,et al."Variation in intraspecific demography drives localised concordance but species-wide discordance in response to past climatic change".BMC ECOLOGY AND EVOLUTION 22.1(2022).